Remove isFirstLaunch

HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java

@@ -143,9 +143,6 @@ public final class Config implements Cloneable, Observable {
     @SerializedName("logLines")
     private IntegerProperty logLines = new SimpleIntegerProperty(100);
 
-    @SerializedName("firstLaunch")
-    private BooleanProperty firstLaunch = new SimpleBooleanProperty(true);
-
     @SerializedName("authlibInjectorServers")
     private ObservableList<AuthlibInjectorServer> authlibInjectorServers = FXCollections.observableArrayList();
 
@@ -431,18 +428,6 @@ public final class Config implements Cloneable, Observable {
         return logLines;
     }
 
-    public boolean isFirstLaunch() {
-        return firstLaunch.get();
-    }
-
-    public void setFirstLaunch(boolean firstLaunch) {
-        this.firstLaunch.set(firstLaunch);
-    }
-
-    public BooleanProperty firstLaunchProperty() {
-        return firstLaunch;
-    }
-
     public ObservableList<AuthlibInjectorServer> getAuthlibInjectorServers() {
         return authlibInjectorServers;
     }

HMCL/src/main/java/org/jackhuang/hmcl/setting/Settings.java

@@ -50,11 +50,7 @@ public class Settings {
         instance = new Settings();
     }
 
-    private final boolean firstLaunch;
-
     private Settings() {
-        firstLaunch = config().isFirstLaunch();
-
         ProxyManager.init();
         Accounts.init();
 
@@ -67,11 +63,6 @@ public class Settings {
         }
 
         config().addListener(source -> ConfigHolder.saveConfig());
-        config().setFirstLaunch(false);
-    }
-
-    public boolean isFirstLaunch() {
-        return firstLaunch;
     }
 
     private Locales.SupportedLocale locale = Locales.getLocaleByName(config().getLocalization());

HMCL/src/main/java/org/jackhuang/hmcl/ui/Decorator.java

@@ -200,7 +200,7 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
             );
             nowAnimation.play();
         });
-        if (!Settings.instance().isFirstLaunch() || Settings.instance().getLocale().getLocale() != Locale.CHINA)
+        if (/* TODO: is not first launch or */Settings.instance().getLocale().getLocale() != Locale.CHINA)
             drawerWrapper.getChildren().remove(welcomeView);
 
         if (!min) buttonsContainer.getChildren().remove(btnMin);